How to keep a mesh in its original position after applying Curve modifier?
The curve modifier makes a given mesh follow a specific curve, this means that the mesh will start at the root of the curve. If you are just looking for a simple bend then i would recommend using the Simple Deform modifier instead. Simple deform lets the mesh retain its original position.
Alternatively you can parent to curve to the object so that the root is always at the origin of the mesh being deformed.